1 /*- 2 * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from the Stanford/CMU enet packet filter, 6 * (net/enet.c) distributed as part of 4.3BSD, and code contributed 7 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence 8 * Berkeley Laboratory. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)bpf.h 7.1 (Berkeley) 5/7/91 39 * 40 * @(#) $Header: /tcpdump/master/libpcap/pcap/bpf.h,v 1.32 2008-12-23 20:13:29 guy Exp $ (LBL) 41 */ 42 43 /* 44 * This is libpcap's cut-down version of bpf.h; it includes only 45 * the stuff needed for the code generator and the userland BPF 46 * interpreter, and the libpcap APIs for setting filters, etc.. 47 * 48 * "pcap-bpf.c" will include the native OS version, as it deals with 49 * the OS's BPF implementation. 50 * 51 * At least two programs found by Google Code Search explicitly includes 52 * <pcap/bpf.h> (even though <pcap.h>/<pcap/pcap.h> includes it for you), 53 * so moving that stuff to <pcap/pcap.h> would break the build for some 54 * programs. 55 */ 56 57 /* 58 * If we've already included <net/bpf.h>, don't re-define this stuff. 59 * We assume BSD-style multiple-include protection in <net/bpf.h>, 60 * which is true of all but the oldest versions of FreeBSD and NetBSD, 61 * or Tru64 UNIX-style multiple-include protection (or, at least, 62 * Tru64 UNIX 5.x-style; I don't have earlier versions available to check), 63 * or AIX-style multiple-include protection (or, at least, AIX 5.x-style; 64 * I don't have earlier versions available to check). 65 * 66 * We do not check for BPF_MAJOR_VERSION, as that's defined by 67 * <linux/filter.h>, which is directly or indirectly included in some 68 * programs that also include pcap.h, and <linux/filter.h> doesn't 69 * define stuff we need. 70 * 71 * This also provides our own multiple-include protection. 72 */ 73 #if !defined(_NET_BPF_H_) && !defined(_BPF_H_) && !defined(_H_BPF) && !defined(lib_pcap_bpf_h) 74 #define lib_pcap_bpf_h 75 76 #ifdef __cplusplus 77 extern "C" { 78 #endif 79 80 /* BSD style release date */ 81 #define BPF_RELEASE 199606 82 83 #ifdef MSDOS /* must be 32-bit */ 84 typedef long bpf_int32; 85 typedef unsigned long bpf_u_int32; 86 #else 87 typedef int bpf_int32; 88 typedef u_int bpf_u_int32; 89 #endif 90 91 /* 92 * Alignment macros. BPF_WORDALIGN rounds up to the next 93 * even multiple of BPF_ALIGNMENT. 94 * 95 * Tcpdump's print-pflog.c uses this, so we define it here. 96 */ 97 #ifndef __NetBSD__ 98 #define BPF_ALIGNMENT sizeof(bpf_int32) 99 #else 100 #define BPF_ALIGNMENT sizeof(long) 101 #endif 102 #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) 103 104 /* 105 * Structure for "pcap_compile()", "pcap_setfilter()", etc.. 106 */ 107 struct bpf_program { 108 u_int bf_len; 109 struct bpf_insn *bf_insns; 110 }; 111 112 /* 113 * Link-layer header type codes. 114 * 115 * Do *NOT* add new values to this list without asking 116 * "tcpdump-workers@lists.tcpdump.org" for a value. Otherwise, you run 117 * the risk of using a value that's already being used for some other 118 * purpose, and of having tools that read libpcap-format captures not 119 * being able to handle captures with your new DLT_ value, with no hope 120 * that they will ever be changed to do so (as that would destroy their 121 * ability to read captures using that value for that other purpose). 122 * 123 * See 124 * 125 * http://www.tcpdump.org/linktypes.html 126 * 127 * for detailed descriptions of some of these link-layer header types. 128 */ 129 130 /* 131 * These are the types that are the same on all platforms, and that 132 * have been defined by <net/bpf.h> for ages. 133 */ 134 #define DLT_NULL 0 /* BSD loopback encapsulation */ 135 #define DLT_EN10MB 1 /* Ethernet (10Mb) */ 136 #define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */ 137 #define DLT_AX25 3 /* Amateur Radio AX.25 */ 138 #define DLT_PRONET 4 /* Proteon ProNET Token Ring */ 139 #define DLT_CHAOS 5 /* Chaos */ 140 #define DLT_IEEE802 6 /* 802.5 Token Ring */ 141 #define DLT_ARCNET 7 /* ARCNET, with BSD-style header */ 142 #define DLT_SLIP 8 /* Serial Line IP */ 143 #define DLT_PPP 9 /* Point-to-point Protocol */ 144 #define DLT_FDDI 10 /* FDDI */ 145 146 /* 147 * These are types that are different on some platforms, and that 148 * have been defined by <net/bpf.h> for ages. We use #ifdefs to 149 * detect the BSDs that define them differently from the traditional 150 * libpcap <net/bpf.h> 151 * 152 * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS, 153 * but I don't know what the right #define is for BSD/OS. 154 */ 155 #define DLT_ATM_RFC1483 11 /* LLC-encapsulated ATM */ 156 157 #ifdef __OpenBSD__ 158 #define DLT_RAW 14 /* raw IP */ 159 #else 160 #define DLT_RAW 12 /* raw IP */ 161 #endif 162 163 /* 164 * Given that the only OS that currently generates BSD/OS SLIP or PPP 165 * is, well, BSD/OS, arguably everybody should have chosen its values 166 * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they 167 * didn't. So it goes. 168 */ 169 #if defined(__NetBSD__) || defined(__FreeBSD__) 170 #ifndef DLT_SLIP_BSDOS 171 #define DLT_SLIP_BSDOS 13 /* BSD/OS Serial Line IP */ 172 #define DLT_PPP_BSDOS 14 /* BSD/OS Point-to-point Protocol */ 173 #endif 174 #else 175 #define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */ 176 #define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */ 177 #endif 178 179 /* 180 * 17 was used for DLT_PFLOG in OpenBSD; it no longer is. 181 * 182 * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG 183 * as 117 so that pflog captures would use a link-layer header type 184 * value that didn't collide with any other values. On all 185 * platforms other than OpenBSD, we defined DLT_PFLOG as 117, 186 * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG. 187 * 188 * OpenBSD eventually switched to using 117 for DLT_PFLOG as well. 189 * 190 * Don't use 17 for anything else. 191 */ 192 193 /* 194 * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and 195 * Mac OS X; don't use it for anything else. (FreeBSD uses 121, 196 * which collides with DLT_HHDLC, even though it doesn't use 18 197 * for anything and doesn't appear to have ever used it for anything.) 198 * 199 * We define it as 18 on those platforms; it is, unfortunately, used 200 * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC 201 * in general. As the packet format for it, like that for 202 * DLT_PFLOG, is not only OS-dependent but OS-version-dependent, 203 * we don't support printing it in tcpdump except on OSes that 204 * have the relevant header files, so it's not that useful on 205 * other platforms. 206 */ 207 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__) 208 #define DLT_PFSYNC 18 209 #endif 210 211 #define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */ 212 213 /* 214 * Apparently Redback uses this for its SmartEdge 400/800. I hope 215 * nobody else decided to use it, too. 216 */ 217 #define DLT_REDBACK_SMARTEDGE 32 218 219 /* 220 * These values are defined by NetBSD; other platforms should refrain from 221 * using them for other purposes, so that NetBSD savefiles with link 222 * types of 50 or 51 can be read as this type on all platforms. 223 */ 224 #define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */ 225 #define DLT_PPP_ETHER 51 /* PPP over Ethernet */ 226 227 /* 228 * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses 229 * a link-layer type of 99 for the tcpdump it supplies. The link-layer 230 * header has 6 bytes of unknown data, something that appears to be an 231 * Ethernet type, and 36 bytes that appear to be 0 in at least one capture 232 * I've seen. 233 */ 234 #define DLT_SYMANTEC_FIREWALL 99 235 236 /* 237 * Values between 100 and 103 are used in capture file headers as 238 * link-layer header type LINKTYPE_ values corresponding to DLT_ types 239 * that differ between platforms; don't use those values for new DLT_ 240 * new types. 241 */ 242 243 /* 244 * Values starting with 104 are used for newly-assigned link-layer 245 * header type values; for those link-layer header types, the DLT_ 246 * value returned by pcap_datalink() and passed to pcap_open_dead(), 247 * and the LINKTYPE_ value that appears in capture files, are the 248 * same. 249 * 250 * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is 251 * the highest such value. 252 */ 253 #define DLT_MATCHING_MIN 104 254 255 /* 256 * This value was defined by libpcap 0.5; platforms that have defined 257 * it with a different value should define it here with that value - 258 * a link type of 104 in a save file will be mapped to DLT_C_HDLC, 259 * whatever value that happens to be, so programs will correctly 260 * handle files with that link type regardless of the value of 261 * DLT_C_HDLC. 262 * 263 * The name DLT_C_HDLC was used by BSD/OS; we use that name for source 264 * compatibility with programs written for BSD/OS. 265 * 266 * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well, 267 * for source compatibility with programs written for libpcap 0.5. 268 */ 269 #define DLT_C_HDLC 104 /* Cisco HDLC */ 270 #define DLT_CHDLC DLT_C_HDLC 271 272 #define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */ 273 274 /* 275 * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW, 276 * except when it isn't. (I.e., sometimes it's just raw IP, and 277 * sometimes it isn't.) We currently handle it as DLT_LINUX_SLL, 278 * so that we don't have to worry about the link-layer header.) 279 */ 280 281 /* 282 * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides 283 * with other values. 284 * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header 285 * (DLCI, etc.). 286 */ 287 #define DLT_FRELAY 107 288 289 /* 290 * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except 291 * that the AF_ type in the link-layer header is in network byte order. 292 * 293 * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so 294 * we don't use 12 for it in OSes other than OpenBSD. 295 */ 296 #ifdef __OpenBSD__ 297 #define DLT_LOOP 12 298 #else 299 #define DLT_LOOP 108 300 #endif 301 302 /* 303 * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's 304 * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other 305 * than OpenBSD. 306 */ 307 #ifdef __OpenBSD__ 308 #define DLT_ENC 13 309 #else 310 #define DLT_ENC 109 311 #endif 312 313 /* 314 * Values between 110 and 112 are reserved for use in capture file headers 315 * as link-layer types corresponding to DLT_ types that might differ 316 * between platforms; don't use those values for new DLT_ types 317 * other than the corresponding DLT_ types. 318 */ 319 320 /* 321 * This is for Linux cooked sockets. 322 */ 323 #define DLT_LINUX_SLL 113 324 325 /* 326 * Apple LocalTalk hardware. 327 */ 328 #define DLT_LTALK 114 329 330 /* 331 * Acorn Econet. 332 */ 333 #define DLT_ECONET 115 334 335 /* 336 * Reserved for use with OpenBSD ipfilter. 337 */ 338 #define DLT_IPFILTER 116 339 340 /* 341 * OpenBSD DLT_PFLOG. 342 */ 343 #define DLT_PFLOG 117 344 345 /* 346 * Registered for Cisco-internal use. 347 */ 348 #define DLT_CISCO_IOS 118 349 350 /* 351 * For 802.11 cards using the Prism II chips, with a link-layer 352 * header including Prism monitor mode information plus an 802.11 353 * header. 354 */ 355 #define DLT_PRISM_HEADER 119 356 357 /* 358 * Reserved for Aironet 802.11 cards, with an Aironet link-layer header 359 * (see Doug Ambrisko's FreeBSD patches). 360 */ 361 #define DLT_AIRONET_HEADER 120 362 363 /* 364 * Sigh. 365 * 366 * This was reserved for Siemens HiPath HDLC on 2002-01-25, as 367 * requested by Tomas Kukosa. 368 * 369 * On 2004-02-25, a FreeBSD checkin to sys/net/bpf.h was made that 370 * assigned 121 as DLT_PFSYNC. Its libpcap does DLT_ <-> LINKTYPE_ 371 * mapping, so it probably supports capturing on the pfsync device 372 * but not saving the captured data to a pcap file. 373 * 374 * OpenBSD, from which pf came, however, uses 18 for DLT_PFSYNC; 375 * their libpcap does no DLT_ <-> LINKTYPE_ mapping, so it would 376 * use 18 in pcap files as well. 377 * 378 * NetBSD and DragonFly BSD also use 18 for DLT_PFSYNC; their 379 * libpcaps do DLT_ <-> LINKTYPE_ mapping, and neither has an entry 380 * for DLT_PFSYNC, so it might not be able to write out dump files 381 * with 18 as the link-layer header type. (Earlier versions might 382 * not have done mapping, in which case they'd work the same way 383 * OpenBSD does.) 384 * 385 * Mac OS X defines it as 18, but doesn't appear to use it as of 386 * Mac OS X 10.7.3. Its libpcap does DLT_ <-> LINKTYPE_ mapping. 387 * 388 * We'll define DLT_PFSYNC as 121 on FreeBSD and define it as 18 on 389 * all other platforms. We'll define DLT_HHDLC as 121 on everything 390 * except for FreeBSD; anybody who wants to compile, on FreeBSD, code 391 * that uses DLT_HHDLC is out of luck. 392 * 393 * We'll define LINKTYPE_PFSYNC as 18, *even on FreeBSD*, and map 394 * it, so that savefiles won't use 121 for PFSYNC - they'll all 395 * use 18. Code that uses pcap_datalink() to determine the link-layer 396 * header type of a savefile won't, when built and run on FreeBSD, 397 * be able to distinguish between LINKTYPE_PFSYNC and LINKTYPE_HHDLC 398 * capture files; code that doesn't, such as the code in Wireshark, 399 * will be able to distinguish between them. 400 */ 401 #ifdef __FreeBSD__ 402 #define DLT_PFSYNC 121 403 #else 404 #define DLT_HHDLC 121 405 #endif 406 407 /* 408 * This is for RFC 2625 IP-over-Fibre Channel. 409 * 410 * This is not for use with raw Fibre Channel, where the link-layer 411 * header starts with a Fibre Channel frame header; it's for IP-over-FC, 412 * where the link-layer header starts with an RFC 2625 Network_Header 413 * field. 414 */ 415 #define DLT_IP_OVER_FC 122 416 417 /* 418 * This is for Full Frontal ATM on Solaris with SunATM, with a 419 * pseudo-header followed by an AALn PDU. 420 * 421 * There may be other forms of Full Frontal ATM on other OSes, 422 * with different pseudo-headers. 423 * 424 * If ATM software returns a pseudo-header with VPI/VCI information 425 * (and, ideally, packet type information, e.g. signalling, ILMI, 426 * LANE, LLC-multiplexed traffic, etc.), it should not use 427 * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump 428 * and the like don't have to infer the presence or absence of a 429 * pseudo-header and the form of the pseudo-header. 430 */ 431 #define DLT_SUNATM 123 /* Solaris+SunATM */ 432 433 /* 434 * Reserved as per request from Kent Dahlgren <kent@praesum.com> 435 * for private use. 436 */ 437 #define DLT_RIO 124 /* RapidIO */ 438 #define DLT_PCI_EXP 125 /* PCI Express */ 439 #define DLT_AURORA 126 /* Xilinx Aurora link layer */ 440 441 /* 442 * Header for 802.11 plus a number of bits of link-layer information 443 * including radio information, used by some recent BSD drivers as 444 * well as the madwifi Atheros driver for Linux. 445 */ 446 #define DLT_IEEE802_11_RADIO 127 /* 802.11 plus radiotap radio header */ 447 448 /* 449 * Reserved for the TZSP encapsulation, as per request from 450 * Chris Waters <chris.waters@networkchemistry.com> 451 * TZSP is a generic encapsulation for any other link type, 452 * which includes a means to include meta-information 453 * with the packet, e.g. signal strength and channel 454 * for 802.11 packets. 455 */ 456 #define DLT_TZSP 128 /* Tazmen Sniffer Protocol */ 457 458 /* 459 * BSD's ARCNET headers have the source host, destination host, 460 * and type at the beginning of the packet; that's what's handed 461 * up to userland via BPF. 462 * 463 * Linux's ARCNET headers, however, have a 2-byte offset field 464 * between the host IDs and the type; that's what's handed up 465 * to userland via PF_PACKET sockets. 466 * 467 * We therefore have to have separate DLT_ values for them. 468 */ 469 #define DLT_ARCNET_LINUX 129 /* ARCNET */ 470 471 /* 472 * Juniper-private data link types, as per request from 473 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used 474 * for passing on chassis-internal metainformation such as 475 * QOS profiles, etc.. 476 */ 477 #define DLT_JUNIPER_MLPPP 130 478 #define DLT_JUNIPER_MLFR 131 479 #define DLT_JUNIPER_ES 132 480 #define DLT_JUNIPER_GGSN 133 481 #define DLT_JUNIPER_MFR 134 482 #define DLT_JUNIPER_ATM2 135 483 #define DLT_JUNIPER_SERVICES 136 484 #define DLT_JUNIPER_ATM1 137 485 486 /* 487 * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund 488 * <dieter@apple.com>. The header that's presented is an Ethernet-like 489 * header: 490 * 491 * #define FIREWIRE_EUI64_LEN 8 492 * struct firewire_header { 493 * u_char firewire_dhost[FIREWIRE_EUI64_LEN]; 494 * u_char firewire_shost[FIREWIRE_EUI64_LEN]; 495 * u_short firewire_type; 496 * }; 497 * 498 * with "firewire_type" being an Ethernet type value, rather than, 499 * for example, raw GASP frames being handed up. 500 */ 501 #define DLT_APPLE_IP_OVER_IEEE1394 138 502 503 /* 504 * Various SS7 encapsulations, as per a request from Jeff Morriss 505 * <jeff.morriss[AT]ulticom.com> and subsequent discussions. 506 */ 507 #define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */ 508 #define DLT_MTP2 140 /* MTP2, without pseudo-header */ 509 #define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */ 510 #define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */ 511 512 /* 513 * DOCSIS MAC frames. 514 */ 515 #define DLT_DOCSIS 143 516 517 /* 518 * Linux-IrDA packets. Protocol defined at http://www.irda.org. 519 * Those packets include IrLAP headers and above (IrLMP...), but 520 * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy 521 * framing can be handled by the hardware and depend on the bitrate. 522 * This is exactly the format you would get capturing on a Linux-IrDA 523 * interface (irdaX), but not on a raw serial port. 524 * Note the capture is done in "Linux-cooked" mode, so each packet include 525 * a fake packet header (struct sll_header). This is because IrDA packet 526 * decoding is dependant on the direction of the packet (incomming or 527 * outgoing). 528 * When/if other platform implement IrDA capture, we may revisit the 529 * issue and define a real DLT_IRDA... 530 * Jean II 531 */ 532 #define DLT_LINUX_IRDA 144 533 534 /* 535 * Reserved for IBM SP switch and IBM Next Federation switch. 536 */ 537 #define DLT_IBM_SP 145 538 #define DLT_IBM_SN 146 539 540 /* 541 * Reserved for private use. If you have some link-layer header type 542 * that you want to use within your organization, with the capture files 543 * using that link-layer header type not ever be sent outside your 544 * organization, you can use these values. 545 * 546 * No libpcap release will use these for any purpose, nor will any 547 * tcpdump release use them, either. 548 * 549 * Do *NOT* use these in capture files that you expect anybody not using 550 * your private versions of capture-file-reading tools to read; in 551 * particular, do *NOT* use them in products, otherwise you may find that 552 * people won't be able to use tcpdump, or snort, or Ethereal, or... to 553 * read capture files from your firewall/intrusion detection/traffic 554 * monitoring/etc. appliance, or whatever product uses that DLT_ value, 555 * and you may also find that the developers of those applications will 556 * not accept patches to let them read those files. 557 * 558 * Also, do not use them if somebody might send you a capture using them 559 * for *their* private type and tools using them for *your* private type 560 * would have to read them. 561 * 562 * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value, 563 * as per the comment above, and use the type you're given. 564 */ 565 #define DLT_USER0 147 566 #define DLT_USER1 148 567 #define DLT_USER2 149 568 #define DLT_USER3 150 569 #define DLT_USER4 151 570 #define DLT_USER5 152 571 #define DLT_USER6 153 572 #define DLT_USER7 154 573 #define DLT_USER8 155 574 #define DLT_USER9 156 575 #define DLT_USER10 157 576 #define DLT_USER11 158 577 #define DLT_USER12 159 578 #define DLT_USER13 160 579 #define DLT_USER14 161 580 #define DLT_USER15 162 581 582 /* 583 * For future use with 802.11 captures - defined by AbsoluteValue 584 * Systems to store a number of bits of link-layer information 585 * including radio information: 586 * 587 * http://www.shaftnet.org/~pizza/software/capturefrm.txt 588 * 589 * but it might be used by some non-AVS drivers now or in the 590 * future. 591 */ 592 #define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ 593 594 /* 595 * Juniper-private data link type, as per request from 596 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used 597 * for passing on chassis-internal metainformation such as 598 * QOS profiles, etc.. 599 */ 600 #define DLT_JUNIPER_MONITOR 164 601 602 /* 603 * BACnet MS/TP frames. 604 */ 605 #define DLT_BACNET_MS_TP 165 606 607 /* 608 * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>. 609 * 610 * This is used in some OSes to allow a kernel socket filter to distinguish 611 * between incoming and outgoing packets, on a socket intended to 612 * supply pppd with outgoing packets so it can do dial-on-demand and 613 * hangup-on-lack-of-demand; incoming packets are filtered out so they 614 * don't cause pppd to hold the connection up (you don't want random 615 * input packets such as port scans, packets from old lost connections, 616 * etc. to force the connection to stay up). 617 * 618 * The first byte of the PPP header (0xff03) is modified to accomodate 619 * the direction - 0x00 = IN, 0x01 = OUT. 620 */ 621 #define DLT_PPP_PPPD 166 622 623 /* 624 * Names for backwards compatibility with older versions of some PPP 625 * software; new software should use DLT_PPP_PPPD. 626 */ 627 #define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD 628 #define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD 629 630 /* 631 * Juniper-private data link type, as per request from 632 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used 633 * for passing on chassis-internal metainformation such as 634 * QOS profiles, cookies, etc.. 635 */ 636 #define DLT_JUNIPER_PPPOE 167 637 #define DLT_JUNIPER_PPPOE_ATM 168 638 639 #define DLT_GPRS_LLC 169 /* GPRS LLC */ 640 #define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ 641 #define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */ 642 643 /* 644 * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line 645 * monitoring equipment. 646 */ 647 #define DLT_GCOM_T1E1 172 648 #define DLT_GCOM_SERIAL 173 649 650 /* 651 * Juniper-private data link type, as per request from 652 * Hannes Gredler <hannes@juniper.net>. The DLT_ is used 653 * for internal communication to Physical Interface Cards (PIC) 654 */ 655 #define DLT_JUNIPER_PIC_PEER 174 656 657 /* 658 * Link types requested by Gregor Maier <gregor@endace.com> of Endace 659 * Measurement Systems. They add an ERF header (see 660 * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of 661 * the link-layer header. 662 */ 663 #define DLT_ERF_ETH 175 /* Ethernet */ 664 #define DLT_ERF_POS 176 /* Packet-over-SONET */ 665 666 /* 667 * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD 668 * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header 669 * includes additional information before the LAPD header, so it's 670 * not necessarily a generic LAPD header. 671 */ 672 #define DLT_LINUX_LAPD 177 673 674 /* 675 * Juniper-private data link type, as per request from 676 * Hannes Gredler <hannes@juniper.net>. 677 * The DLT_ are used for prepending meta-information 678 * like interface index, interface name 679 * before standard Ethernet, PPP, Frelay & C-HDLC Frames 680 */ 681 #define DLT_JUNIPER_ETHER 178 682 #define DLT_JUNIPER_PPP 179 683 #define DLT_JUNIPER_FRELAY 180 684 #define DLT_JUNIPER_CHDLC 181 685 686 /* 687 * Multi Link Frame Relay (FRF.16) 688 */ 689 #define DLT_MFR 182 690 691 /* 692 * Juniper-private data link type, as per request from 693 * Hannes Gredler <hannes@juniper.net>. 694 * The DLT_ is used for internal communication with a 695 * voice Adapter Card (PIC) 696 */ 697 #define DLT_JUNIPER_VP 183 698 699 /* 700 * Arinc 429 frames. 701 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. 702 * Every frame contains a 32bit A429 label. 703 * More documentation on Arinc 429 can be found at 704 * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf 705 */ 706 #define DLT_A429 184 707 708 /* 709 * Arinc 653 Interpartition Communication messages. 710 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. 711 * Please refer to the A653-1 standard for more information. 712 */ 713 #define DLT_A653_ICM 185 714 715 /* 716 * USB packets, beginning with a USB setup header; requested by 717 * Paolo Abeni <paolo.abeni@email.it>. 718 */ 719 #define DLT_USB 186 720 721 /* 722 * Bluetooth HCI UART transport layer (part H:4); requested by 723 * Paolo Abeni. 724 */ 725 #define DLT_BLUETOOTH_HCI_H4 187 726 727 /* 728 * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz 729 * <cruz_petagay@bah.com>. 730 */ 731 #define DLT_IEEE802_16_MAC_CPS 188 732 733 /* 734 * USB packets, beginning with a Linux USB header; requested by 735 * Paolo Abeni <paolo.abeni@email.it>. 736 */ 737 #define DLT_USB_LINUX 189 738 739 /* 740 * Controller Area Network (CAN) v. 2.0B packets. 741 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. 742 * Used to dump CAN packets coming from a CAN Vector board. 743 * More documentation on the CAN v2.0B frames can be found at 744 * http://www.can-cia.org/downloads/?269 745 */ 746 #define DLT_CAN20B 190 747 748 /* 749 * IEEE 802.15.4, with address fields padded, as is done by Linux 750 * drivers; requested by Juergen Schimmer. 751 */ 752 #define DLT_IEEE802_15_4_LINUX 191 753 754 /* 755 * Per Packet Information encapsulated packets. 756 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>. 757 */ 758 #define DLT_PPI 192 759 760 /* 761 * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; 762 * requested by Charles Clancy. 763 */ 764 #define DLT_IEEE802_16_MAC_CPS_RADIO 193 765 766 /* 767 * Juniper-private data link type, as per request from 768 * Hannes Gredler <hannes@juniper.net>. 769 * The DLT_ is used for internal communication with a 770 * integrated service module (ISM). 771 */ 772 #define DLT_JUNIPER_ISM 194 773 774 /* 775 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 776 * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>. 777 * For this one, we expect the FCS to be present at the end of the frame; 778 * if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used. 779 */ 780 #define DLT_IEEE802_15_4 195 781 782 /* 783 * Various link-layer types, with a pseudo-header, for SITA 784 * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com). 785 */ 786 #define DLT_SITA 196 787 788 /* 789 * Various link-layer types, with a pseudo-header, for Endace DAG cards; 790 * encapsulates Endace ERF records. Requested by Stephen Donnelly 791 * <stephen@endace.com>. 792 */ 793 #define DLT_ERF 197 794 795 /* 796 * Special header prepended to Ethernet packets when capturing from a 797 * u10 Networks board. Requested by Phil Mulholland 798 * <phil@u10networks.com>. 799 */ 800 #define DLT_RAIF1 198 801 802 /* 803 * IPMB packet for IPMI, beginning with the I2C slave address, followed 804 * by the netFn and LUN, etc.. Requested by Chanthy Toeung 805 * <chanthy.toeung@ca.kontron.com>. 806 */ 807 #define DLT_IPMB 199 808 809 /* 810 * Juniper-private data link type, as per request from 811 * Hannes Gredler <hannes@juniper.net>. 812 * The DLT_ is used for capturing data on a secure tunnel interface. 813 */ 814 #define DLT_JUNIPER_ST 200 815 816 /* 817 * Bluetooth HCI UART transport layer (part H:4), with pseudo-header 818 * that includes direction information; requested by Paolo Abeni. 819 */ 820 #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201 821 822 /* 823 * AX.25 packet with a 1-byte KISS header; see 824 * 825 * http://www.ax25.net/kiss.htm 826 * 827 * as per Richard Stearn <richard@rns-stearn.demon.co.uk>. 828 */ 829 #define DLT_AX25_KISS 202 830 831 /* 832 * LAPD packets from an ISDN channel, starting with the address field, 833 * with no pseudo-header. 834 * Requested by Varuna De Silva <varunax@gmail.com>. 835 */ 836 #define DLT_LAPD 203 837 838 /* 839 * Variants of various link-layer headers, with a one-byte direction 840 * pseudo-header prepended - zero means "received by this host", 841 * non-zero (any non-zero value) means "sent by this host" - as per 842 * Will Barker <w.barker@zen.co.uk>. 843 */ 844 #define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */ 845 #define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ 846 #define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */ 847 #define DLT_LAPB_WITH_DIR 207 /* LAPB */ 848 849 /* 850 * 208 is reserved for an as-yet-unspecified proprietary link-layer 851 * type, as requested by Will Barker. 852 */ 853 854 /* 855 * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman 856 * <avn@pigeonpoint.com>. 857 */ 858 #define DLT_IPMB_LINUX 209 859 860 /* 861 * FlexRay automotive bus - http://www.flexray.com/ - as requested 862 * by Hannes Kaelber <hannes.kaelber@x2e.de>. 863 */ 864 #define DLT_FLEXRAY 210 865 866 /* 867 * Media Oriented Systems Transport (MOST) bus for multimedia 868 * transport - http://www.mostcooperation.com/ - as requested 869 * by Hannes Kaelber <hannes.kaelber@x2e.de>. 870 */ 871 #define DLT_MOST 211 872 873 /* 874 * Local Interconnect Network (LIN) bus for vehicle networks - 875 * http://www.lin-subbus.org/ - as requested by Hannes Kaelber 876 * <hannes.kaelber@x2e.de>. 877 */ 878 #define DLT_LIN 212 879 880 /* 881 * X2E-private data link type used for serial line capture, 882 * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>. 883 */ 884 #define DLT_X2E_SERIAL 213 885 886 /* 887 * X2E-private data link type used for the Xoraya data logger 888 * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>. 889 */ 890 #define DLT_X2E_XORAYA 214 891 892 /* 893 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 894 * nothing), but with the PHY-level data for non-ASK PHYs (4 octets 895 * of 0 as preamble, one octet of SFD, one octet of frame length+ 896 * reserved bit, and then the MAC-layer data, starting with the 897 * frame control field). 898 * 899 * Requested by Max Filippov <jcmvbkbc@gmail.com>. 900 */ 901 #define DLT_IEEE802_15_4_NONASK_PHY 215 902 903 /* 904 * David Gibson <david@gibson.dropbear.id.au> requested this for 905 * captures from the Linux kernel /dev/input/eventN devices. This 906 * is used to communicate keystrokes and mouse movements from the 907 * Linux kernel to display systems, such as Xorg. 908 */ 909 #define DLT_LINUX_EVDEV 216 910 911 /* 912 * GSM Um and Abis interfaces, preceded by a "gsmtap" header. 913 * 914 * Requested by Harald Welte <laforge@gnumonks.org>. 915 */ 916 #define DLT_GSMTAP_UM 217 917 #define DLT_GSMTAP_ABIS 218 918 919 /* 920 * MPLS, with an MPLS label as the link-layer header. 921 * Requested by Michele Marchetto <michele@openbsd.org> on behalf 922 * of OpenBSD. 923 */ 924 #define DLT_MPLS 219 925 926 /* 927 * USB packets, beginning with a Linux USB header, with the USB header 928 * padded to 64 bytes; required for memory-mapped access. 929 */ 930 #define DLT_USB_LINUX_MMAPPED 220 931 932 /* 933 * DECT packets, with a pseudo-header; requested by 934 * Matthias Wenzel <tcpdump@mazzoo.de>. 935 */ 936 #define DLT_DECT 221 937 938 /* 939 * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1@nasa.gov> 940 * Date: Mon, 11 May 2009 11:18:30 -0500 941 * 942 * DLT_AOS. We need it for AOS Space Data Link Protocol. 943 * I have already written dissectors for but need an OK from 944 * legal before I can submit a patch. 945 * 946 */ 947 #define DLT_AOS 222 948 949 /* 950 * Wireless HART (Highway Addressable Remote Transducer) 951 * From the HART Communication Foundation 952 * IES/PAS 62591 953 * 954 * Requested by Sam Roberts <vieuxtech@gmail.com>. 955 */ 956 #define DLT_WIHART 223 957 958 /* 959 * Fibre Channel FC-2 frames, beginning with a Frame_Header. 960 * Requested by Kahou Lei <kahou82@gmail.com>. 961 */ 962 #define DLT_FC_2 224 963 964 /* 965 * Fibre Channel FC-2 frames, beginning with an encoding of the 966 * SOF, and ending with an encoding of the EOF. 967 * 968 * The encodings represent the frame delimiters as 4-byte sequences 969 * representing the corresponding ordered sets, with K28.5 970 * represented as 0xBC, and the D symbols as the corresponding 971 * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2, 972 * is represented as 0xBC 0xB5 0x55 0x55. 973 * 974 * Requested by Kahou Lei <kahou82@gmail.com>. 975 */ 976 #define DLT_FC_2_WITH_FRAME_DELIMS 225 977 978 /* 979 * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed@Sun.COM>. 980 * 981 * The pseudo-header starts with a one-byte version number; for version 2, 982 * the pseudo-header is: 983 * 984 * struct dl_ipnetinfo { 985 * u_int8_t dli_version; 986 * u_int8_t dli_family; 987 * u_int16_t dli_htype; 988 * u_int32_t dli_pktlen; 989 * u_int32_t dli_ifindex; 990 * u_int32_t dli_grifindex; 991 * u_int32_t dli_zsrc; 992 * u_int32_t dli_zdst; 993 * }; 994 * 995 * dli_version is 2 for the current version of the pseudo-header. 996 * 997 * dli_family is a Solaris address family value, so it's 2 for IPv4 998 * and 26 for IPv6. 999 * 1000 * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing 1001 * packets, and 2 for packets arriving from another zone on the same 1002 * machine. 1003 * 1004 * dli_pktlen is the length of the packet data following the pseudo-header 1005 * (so the captured length minus dli_pktlen is the length of the 1006 * pseudo-header, assuming the entire pseudo-header was captured). 1007 * 1008 * dli_ifindex is the interface index of the interface on which the 1009 * packet arrived. 1010 * 1011 * dli_grifindex is the group interface index number (for IPMP interfaces). 1012 * 1013 * dli_zsrc is the zone identifier for the source of the packet. 1014 * 1015 * dli_zdst is the zone identifier for the destination of the packet. 1016 * 1017 * A zone number of 0 is the global zone; a zone number of 0xffffffff 1018 * means that the packet arrived from another host on the network, not 1019 * from another zone on the same machine. 1020 * 1021 * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates 1022 * which of those it is. 1023 */ 1024 #define DLT_IPNET 226 1025 1026 /* 1027 * CAN (Controller Area Network) frames, with a pseudo-header as supplied 1028 * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux 1029 * source. 1030 * 1031 * Requested by Felix Obenhuber <felix@obenhuber.de>. 1032 */ 1033 #define DLT_CAN_SOCKETCAN 227 1034 1035 /* 1036 * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies 1037 * whether it's v4 or v6. Requested by Darren Reed <Darren.Reed@Sun.COM>. 1038 */ 1039 #define DLT_IPV4 228 1040 #define DLT_IPV6 229 1041 1042 /* 1043 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 1044 * nothing), and with no FCS at the end of the frame; requested by 1045 * Jon Smirl <jonsmirl@gmail.com>. 1046 */ 1047 #define DLT_IEEE802_15_4_NOFCS 230 1048 1049 /* 1050 * Raw D-Bus: 1051 * 1052 * http://www.freedesktop.org/wiki/Software/dbus 1053 * 1054 * messages: 1055 * 1056 * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages 1057 * 1058 * starting with the endianness flag, followed by the message type, etc., 1059 * but without the authentication handshake before the message sequence: 1060 * 1061 * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol 1062 * 1063 * Requested by Martin Vidner <martin@vidner.net>. 1064 */ 1065 #define DLT_DBUS 231 1066 1067 /* 1068 * Juniper-private data link type, as per request from 1069 * Hannes Gredler <hannes@juniper.net>. 1070 */ 1071 #define DLT_JUNIPER_VS 232 1072 #define DLT_JUNIPER_SRX_E2E 233 1073 #define DLT_JUNIPER_FIBRECHANNEL 234 1074 1075 /* 1076 * DVB-CI (DVB Common Interface for communication between a PC Card 1077 * module and a DVB receiver). See 1078 * 1079 * http://www.kaiser.cx/pcap-dvbci.html 1080 * 1081 * for the specification. 1082 * 1083 * Requested by Martin Kaiser <martin@kaiser.cx>. 1084 */ 1085 #define DLT_DVB_CI 235 1086 1087 /* 1088 * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but 1089 * *not* the same as, 27.010). Requested by Hans-Christoph Schemmel 1090 * <hans-christoph.schemmel@cinterion.com>. 1091 */ 1092 #define DLT_MUX27010 236 1093 1094 /* 1095 * STANAG 5066 D_PDUs. Requested by M. Baris Demiray 1096 * <barisdemiray@gmail.com>. 1097 */ 1098 #define DLT_STANAG_5066_D_PDU 237 1099 1100 /* 1101 * Juniper-private data link type, as per request from 1102 * Hannes Gredler <hannes@juniper.net>. 1103 */ 1104 #define DLT_JUNIPER_ATM_CEMIC 238 1105 1106 /* 1107 * NetFilter LOG messages 1108 * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets) 1109 * 1110 * Requested by Jakub Zawadzki <darkjames-ws@darkjames.pl> 1111 */ 1112 #define DLT_NFLOG 239 1113 1114 /* 1115 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type 1116 * for Ethernet packets with a 4-byte pseudo-header and always 1117 * with the payload including the FCS, as supplied by their 1118 * netANALYZER hardware and software. 1119 * 1120 * Requested by Holger P. Frommer <HPfrommer@hilscher.com> 1121 */ 1122 #define DLT_NETANALYZER 240 1123 1124 /* 1125 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type 1126 * for Ethernet packets with a 4-byte pseudo-header and FCS and 1127 * with the Ethernet header preceded by 7 bytes of preamble and 1128 * 1 byte of SFD, as supplied by their netANALYZER hardware and 1129 * software. 1130 * 1131 * Requested by Holger P. Frommer <HPfrommer@hilscher.com> 1132 */ 1133 #define DLT_NETANALYZER_TRANSPARENT 241 1134 1135 /* 1136 * IP-over-Infiniband, as specified by RFC 4391. 1137 * 1138 * Requested by Petr Sumbera <petr.sumbera@oracle.com>. 1139 */ 1140 #define DLT_IPOIB 242 1141 1142 /* 1143 * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0). 1144 * 1145 * Requested by Guy Martin <gmsoft@tuxicoman.be>. 1146 */ 1147 #define DLT_MPEG_2_TS 243 1148 1149 /* 1150 * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as 1151 * used by their ng40 protocol tester. 1152 * 1153 * Requested by Jens Grimmer <jens.grimmer@ng4t.com>. 1154 */ 1155 #define DLT_NG40 244 1156 1157 /* 1158 * Pseudo-header giving adapter number and flags, followed by an NFC 1159 * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU, 1160 * as specified by NFC Forum Logical Link Control Protocol Technical 1161 * Specification LLCP 1.1. 1162 * 1163 * Requested by Mike Wakerly <mikey@google.com>. 1164 */ 1165 #define DLT_NFC_LLCP 245 1166 1167 /* 1168 * 245 is used as LINKTYPE_PFSYNC; do not use it for any other purpose. 1169 * 1170 * DLT_PFSYNC has different values on different platforms, and all of 1171 * them collide with something used elsewhere. On platforms that 1172 * don't already define it, define it as 245. 1173 */ 1174 #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__APPLE__) 1175 #define DLT_PFSYNC 246 1176 #endif 1177 1178 #define DLT_MATCHING_MAX 246 /* highest value in the "matching" range */ 1179 1180 /* 1181 * DLT and savefile link type values are split into a class and 1182 * a member of that class. A class value of 0 indicates a regular 1183 * DLT_/LINKTYPE_ value. 1184 */ 1185 #define DLT_CLASS(x) ((x) & 0x03ff0000) 1186 1187 /* 1188 * NetBSD-specific generic "raw" link type. The class value indicates 1189 * that this is the generic raw type, and the lower 16 bits are the 1190 * address family we're dealing with. Those values are NetBSD-specific; 1191 * do not assume that they correspond to AF_ values for your operating 1192 * system. 1193 */ 1194 #define DLT_CLASS_NETBSD_RAWAF 0x02240000 1195 #define DLT_NETBSD_RAWAF(af) (DLT_CLASS_NETBSD_RAWAF | (af)) 1196 #define DLT_NETBSD_RAWAF_AF(x) ((x) & 0x0000ffff) 1197 #define DLT_IS_NETBSD_RAWAF(x) (DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF) 1198 1199 1200 /* 1201 * The instruction encodings. 1202 */ 1203 /* instruction classes */ 1204 #define BPF_CLASS(code) ((code) & 0x07) 1205 #define BPF_LD 0x00 1206 #define BPF_LDX 0x01 1207 #define BPF_ST 0x02 1208 #define BPF_STX 0x03 1209 #define BPF_ALU 0x04 1210 #define BPF_JMP 0x05 1211 #define BPF_RET 0x06 1212 #define BPF_MISC 0x07 1213 1214 /* ld/ldx fields */ 1215 #define BPF_SIZE(code) ((code) & 0x18) 1216 #define BPF_W 0x00 1217 #define BPF_H 0x08 1218 #define BPF_B 0x10 1219 #define BPF_MODE(code) ((code) & 0xe0) 1220 #define BPF_IMM 0x00 1221 #define BPF_ABS 0x20 1222 #define BPF_IND 0x40 1223 #define BPF_MEM 0x60 1224 #define BPF_LEN 0x80 1225 #define BPF_MSH 0xa0 1226 1227 /* alu/jmp fields */ 1228 #define BPF_OP(code) ((code) & 0xf0) 1229 #define BPF_ADD 0x00 1230 #define BPF_SUB 0x10 1231 #define BPF_MUL 0x20 1232 #define BPF_DIV 0x30 1233 #define BPF_OR 0x40 1234 #define BPF_AND 0x50 1235 #define BPF_LSH 0x60 1236 #define BPF_RSH 0x70 1237 #define BPF_NEG 0x80 1238 #define BPF_JA 0x00 1239 #define BPF_JEQ 0x10 1240 #define BPF_JGT 0x20 1241 #define BPF_JGE 0x30 1242 #define BPF_JSET 0x40 1243 #define BPF_SRC(code) ((code) & 0x08) 1244 #define BPF_K 0x00 1245 #define BPF_X 0x08 1246 1247 /* ret - BPF_K and BPF_X also apply */ 1248 #define BPF_RVAL(code) ((code) & 0x18) 1249 #define BPF_A 0x10 1250 1251 /* misc */ 1252 #define BPF_MISCOP(code) ((code) & 0xf8) 1253 #define BPF_TAX 0x00 1254 #define BPF_TXA 0x80 1255 1256 /* 1257 * The instruction data structure. 1258 */ 1259 struct bpf_insn { 1260 u_short code; 1261 u_char jt; 1262 u_char jf; 1263 bpf_u_int32 k; 1264 }; 1265 1266 /* 1267 * Macros for insn array initializers. 1268 */ 1269 #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k } 1270 #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k } 1271 1272 #if __STDC__ || defined(__cplusplus) 1273 extern int bpf_validate(const struct bpf_insn *, int); 1274 extern u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int); 1275 #else 1276 extern int bpf_validate(); 1277 extern u_int bpf_filter(); 1278 #endif 1279 1280 /* 1281 * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). 1282 */ 1283 #define BPF_MEMWORDS 16 1284 1285 #ifdef __cplusplus 1286 } 1287 #endif 1288 1289 #endif /* !defined(_NET_BPF_H_) && !defined(_BPF_H_) && !defined(_H_BPF) && !defined(lib_pcap_bpf_h) */ 1290